<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索框 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- 表格 -->
      <el-table :data="goodsList" style="width: 100%;" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column prop="goods_name" label="商品名称"></el-table-column>
        <el-table-column prop="goods_price" label="商品价格(元)" width="95"></el-table-column>
        <el-table-column prop="goods_weight" label="商品重量" width="70"></el-table-column>
        <el-table-column prop="add_time" label="创建时间" width="140">
          <template v-slot="scope">{{ scope.row.add_time | dateFormat }}</template>
        </el-table-column>
        <el-table-column lable="操作" label="操作" width="130">
          <template v-slot="scope">
            <!-- 编辑商品 -->
            <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
            <!-- 删除商品 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="delCurrentGoods(scope.row)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      ></el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 请求参数
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表
      goodsList: [],
      // 总数据条数
      total: 0
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    // 获取商品列表数据
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })

      if (res.meta.status !== 200) {
        return this.$message.error('商品列表数据获取失败！')
      }

      this.goodsList = res.data.goods
      this.total = res.data.total
      this.$message.success('商品列表数据获取成功！')
    },
    // 当前页条数改变时会调用该函数
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 当前页数改变时会调用
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 删除当前商品
    async delCurrentGoods(row) {
      const confirm = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      if (confirm !== 'confirm') {
        return this.$message.info('已取消删除该商品！')
      }

      const { data: res } = await this.$http.delete('goods/' + row.goods_id)

      if (res.meta.status !== 200) {
        return this.$message.error('删除商品失败！')
      }

      this.getGoodsList()
      this.$message.success('商品删除成功！')
    },
    // 跳转至添加商品页
    goAddPage() {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped></style>
